• Journal of Korea Multimedia Society
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• v.16 no.2
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• pp.198-205
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• 2013

In this paper, the performance of multicore processor architecture is analyzed which utilizes out-of-order superscalar processor core using multiple basic block execution. Using SPEC 2000 benchmarks as input, the trace-driven simulation has been performed for the out-of-order superscalar processor with the window size from 32 to 64 and the number of cores between 1 and 16, exploiting multiple basic block execution from 1 to 4 extensively. As a result, the multicore out-of-order superscalar processor with 4 basic block execution achieves 22.0 % average performance increase over the same architecture with the single basic block execution.

• The Korean Journal of Applied Statistics
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• v.2 no.1
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• pp.54-64
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• 1989

The paper by Kurkjian and Zelen(1963) introducted the Property A which related to a structural property of concordance matrix of the column incidence matrix. On the other hand, Paik(1985) showed the property of the concordance matrix, which has multinested block circulant pattern matrix, and this structural property was termed Property C by Paik(1985). This paper classifies the incomplete block designs according to the pattern of the concordence matrix which has multi-nested block circulant pattern. The purpose of this classification simplified the solution of reduced normal equation and plan of the design.

• Proceedings of the Korea Institutes of Information Security and Cryptology Conference
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• 1996.11a
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• pp.272-278
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• 1996

본 논문에서는 자동 동기 블럭 암호 시스템에서 발생하는 에러 전파 현상으로 인하여 파생되는 문제를 경감하기 위하여, 다중 암호 알고리즘을 이용한 병렬처리 자동동기 블럭 암호 시스템을 제안하였다. 제안된 구조는 암호 알고리즘 출력속도를 높일 수 있을 뿐만 아니라, 에러전파로 파생된 블럭 단위의 연속적인 에러를 여러 채널로 분산시키는 특성이 있다. 이를 설명하기 위하여 CFB 모드에 적용하여 특성을 분석하였고, 응용 가능성 이 높은 분야에 대하여 기술하였다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.22 no.2
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• pp.353-360
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• 1997

In this paper, we propose a new blocking method in which the size of an encryption block is changed according to the size of a message block. The proposed method can be applied to multisignature scheme with no restrictio of the signing order and a multisignature anc be sent secretly to the receiver through RSA encryption. It causes expansion in block size of a multisignuture, but the length of the expanded bits is not greater than the number of signers regardless fo the bit lengths of RSA moduli.

• The Journal of the Acoustical Society of Korea
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• v.13 no.4
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• pp.5-11
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• 1994

In this paper, the ciassification of Korean character type using multi neural network and fuzzy inference based on block partition is studied. For the effective classification of a consonant and a vowel, block partition method which devide the region of a consonant and a vowel for each type in the character is proposed. And the partitioned block can be changed according to the each type adaptively. For the improvement of classification rate, the multi neural network with a whole and a part neural network is consisted, and the character type by using fuzzy inference is decided. To verify the validity of the proposed method, computer simulation is accomplished, and from the classification rate $92.6\%$, the effectivity of the method is confirmed.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.972-973
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• 2015

최신 발전제어시스템은 신뢰성, 편의성 및 범용성 크게 세가지 설계의도를 가지고 개발되고 있다. 다중화제어기, 이중화통신, 진단 및 감시시스템 등을 채택하여 높은 신뢰성을 확보하였으며 프로그램 오류파악 및 수정 등의 편의성이 좋은 기능블럭형 타입 프로그램을 이용하여 제어로직을 작성하고 있다. 또한, 발전방식 및 제어대상에 관계없이 활용 가능한 범용적인 고속제어시스템을 개발하여 발전소에 적용하고 있다. 본 논문에서는 최근 전력연구원에서 개발한 고속의 기능블럭형 제어기와 다중화기술이 결합된 여자시스템의 설계구성 및 특징을 기술하고 시스템의 신뢰성확보를 위해 수행한 성능시험 결과를 수록하였다.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.27 no.4
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• pp.534-541
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• 2003

To investigate the combustion characteristics in a low-pollutant municipal waste incinerator, the generalized multi-block simulation code that can be applied to turbulent reacting flow with gaseous hydrocarbon fuel in a 3D complex geometry has been developed with nongray radiation effects. To deal with the complex geometry, structured multi-block method and the scheme which treats interfaces implicitly are adopted. The developed code is validated through various engineering problems such as curved duct flow, driven cavity flow, gray multi-block radiation, nongray radiation. and combustion in a incinerator.

• Communications for Statistical Applications and Methods
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• v.5 no.1
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• pp.85-97
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• 1998

완전확률화모형 및 랜덤화블럭모형하에서의 주요한 다중비교 분석기법들을 시뮬레이션을 이용하여 검토하고자 하였다. 시뮬레이션 결과는 순위변환과 최소유의차검정을 이용한 다중비교 분석기법이 모수적 ANOVA F 검정과 Fisher의 유의차검정, 비모수적 Kruskal-Wallis 검정과 최소유의차검정 및 Friedman 검정과 최소유의차검정을 이용한 분석기법보다 전체실험오차율, 전체실험검정력 및 개별쌍검정력 면에서 상대적으로 뛰어남을 보여준다. 즉 순위변환한 ANOVA F 검정의 전체실험오차율은 명목상의 유의수준을 잘 유지하고 있으며, 전체실험검정력 및 개별쌍검정력은 모수적 ANOVA F 검정과 Kruskal-Wallis 검정 및 Friedman 검정기법보다 전반적으로 우수함을 알 수 있다.

• The Korean Journal of Applied Statistics
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• v.7 no.2
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• pp.289-297
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• 1994

A block design will be said to have Property C if the concordance matrix can be expressed as a linear combination of Kronecker product of permutation matrices. No matrix inversions are necessary for the intrablock analysis of the block designs which possesses the Property C(Paik, 1985). In this paper, in order to show the Li type PBIB designs possesses the Property C, we suggest the structure of the concordance matrices of Li type PBIB designs are multi-nested block circulant pattern.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.16 no.7
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• pp.680-695
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• 1991

In this paper, the conditions on the number of required copies of a self-routing network with and without extra stages in back-to-back manner are presented respectively for a nonblocking $Multi-Log_2N$ multiconnection network. Actually the obained results hold regardless of connection patterns, i.e., whether a network deploys on-to-one connections or multiconnections. Thus open problems on the nonblocking condition for a multi $Multi-Log_2N$ multiconnection network are solved. Interestingly some of the given formulas comprise the Benes network and the Canto network as a special case repectively. A novel switching system architecture deploying a distributed calls-distribution algorithm is provided to design a nonblocking $Multi-Log_2N$ photonic switching network using a directional coupler. And a directional couplex based call holding demultiplexer is introduced to hold a call until blocking disappears in a switching network and let it enter to a network, provided that the number of switching networks is less than that of required switching networks for a nonblocking $Multi-Log_2N$ network.